Supramolecular energy transfer from photoexcited chlorosomal zinc porphyrin self-aggregates to a chlorin or bacteriochlorin monomer as models of main light-harvesting antenna systems in green photosynthetic bacteria

Bioorg Med Chem Lett. 2012 Aug 15;22(16):5218-21. doi: 10.1016/j.bmcl.2012.06.066. Epub 2012 Jun 28.

Abstract

Self-aggregates of a synthetic zinc porphyrin worked as a light absorber and photoexcited energy donor, transferred the collected energy to a small amount of 3-acetyl-(bacterio)chlorin monomer, and induced near-infrared fluorescence from the acceptors in aqueous micellar solution. These artificial supramolecular systems are novel models of the main light-harvesting antennas of green photosynthetic bacteria, chlorosomes.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacteria / metabolism*
  • Energy Transfer
  • Light-Harvesting Protein Complexes / metabolism
  • Metalloporphyrins / chemistry*
  • Models, Biological
  • Porphyrins / chemistry*
  • Porphyrins / metabolism
  • Spectrometry, Fluorescence

Substances

  • Light-Harvesting Protein Complexes
  • Metalloporphyrins
  • Porphyrins
  • bacteriochlorin
  • zinc hematoporphyrin
  • chlorin